Filter for carbureters



J. A. McVICKAR. FILTER FOR CARBURETERS. APPLICAUON HLED MAYB, 1920.

1,887,731. Patented Aug. 16, 1921.

INVENTOR "vention rectangular in shape and Fig. 2 is gauze 41 over which the filter UNITED STATES PATENT OFF] some 1. ucvroxan, or NEW YORK, N. Y. rmnn'ron cannnnnrnns.

Specification of Letters Patent. Application filed Kay 8,

1920. Serial No. 379,706.

To aZZwkom it may concern:

Be it known that I, JOHN A. MCVIOKAR, 38 a citizen of the United States, and a resident of New York, in the county of New York and State of New York, have invented certain new and useful Improvements in F ilters for Carbureters, of which the followin is a specification.

This invention relates to carbureters and particularly to a system for filtering the air supply to carbureters as used on automobiles. The objects of the invention are to The filter cloth 39 is arranged on a roll and passes over the roller 40 which is turned by the knob 4:0" from the outside of the case. This rolls the filter cloth on roller 40 and brings a fresh surface between-the opening the case. When a roll of filter cloth has been used up it is replaced with a fresh roll which is taken up on roller 40 as described.

Pipe 14 leads into the space inclosed between spring 36 and the filter cloth. This secure a clean supply of air to the carsprinfg, by the loops 37, holds the wire 41 bureter and to prevent grit and other forand lter cloth 39 taut and guards against eign matter from entering the cylinders of the possibility of leakage around the filter cloth.

Havingthus described claim:

1. In a device of the class described, the combination of an intake pipe forcarbureters, an air filter secured to said pipe consisting of a casing having an opening. in front covered with wire gauze, a pair of rollers placed in the rear of said casing, a grit from the filter fabric passing between said rollers, an

this dust is arch-shaped, flat spring, said spring secured drawn through the carbureter into the cylin said casing in front of said rollers and ind rs causing carbonization. This invenhaving its ends arranged to engage and hold tion provides a filter of considerable area said fabric taut against said wire gauze. for filtering the air supply to the carbureter 2. In a device of the class described, the and includes novel means for quickly removcombination of an intake pipe, an air filter ing or replacing the filter element as it be secured to said pipe consisting of a casing comes filled with particles of dust. having an opening in front covered with In the drawings 14 represents the intake wire gauze, a pair of rollers placed in the pipe of a carbureter for internal combusrear of said casing, a filter fabric. passing tion engines to which the filter'is attached. -between said rollers, an arch-shaped, flat This consists of a rectangular casing 35 spring secured in said casing, the ends of secured to elbow 14 and having a suitable said spring formed in loops and. extended hin ed cover 43 secured at 44. An aperture to hold said filter fabric'taut across said in t is cover is provided with a sheet of wire wire gauze.

cloth 39 is Signed at New York in the county of passed and onthe outside another wire New York and State of New York, this 4th screen 42 is provided for mechanical proday of May, A. D. 1920. tection. Pipe 14 leads into the case directly below the wire screen 41 and the air drawn JOHN A. MoVICKAR. into this pipe passes through the filter cloth 39.

the engine through the carbureter. These objects are obtained by the construction shown in the accompanying drawings in which Figure 1 shows one form of this inmy invention, I

a cross-section of Fig. 1.

Under ordinary conditions ply for the carbureter of an taken behind the fan of the air is charged with dust and road-bed and in consequence the air supautomobile is car where the screens 41 and 42 as may be desired without 

